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In physics, absorption of electromagnetic radiation is the way by which the energy of a photon is taken up by matter, typically the electrons of an atom. Thus, the electromagnetic energy is transformed to other forms of energy for example, to heat. The absorption of light during wave propagation is often called attenuation. Usually, the absorption of waves does not depend on their intensity (linear absorption), although in certain conditions (usually, in optics), the medium changes its transparency dependently on the intensity of waves going through, and the Saturable absorption (or nonlinear absorption) occurs. From Wikipedia under the
GNU Free Documentation License  iac.ethz.ch 419px x 300px | 43.70kB [source page] k canopy extinction coefficient Figure 3 Radiation transmission and absorption through the canopy If only the PAR Photosynthetically Active Radiation and the APAR Available Photosynthetically Active Radiation  daviddarling.info 182px x 400px | 8.90kB [source page] The capture of photons by atoms molecules or ions which results in a decrease in the intensity of light or other electromagnetic radiation as it passes through a  andor.com 308px x 570px | 147.40kB [source page] Light Fundamentals Menu Light Absorption Light Emission Light Scattering Radiometry Photometry Light Light is part of the electromagnetic spectrum which ranges from radio waves to gamma rays Electromagnetic radiation waves as their names suggest are fluctuations of electric and magnetic From Yahoo Image Search: "Absorption (electromagnetic radiation)"  news.google.com Pakistan Times Quantum physics and light quanta evolved due to the resolution of the new phenomena regarding emission and absorption of electromagnetic radiation by matter ... news.google.com Universe Today ... using the new breed of artificial optical materials that feature extraordinary abilities to bend light and other forms of electromagnetic radiation . ... and more » news.google.com Journal of the American Podiatric Medical Association (subscription) bornstein e, INVENTOR: Near-infrared electromagnetic modification of cellular steady-state membrane potentials. US patent application 20080139992. ... and more » From Google News Search: "Absorption (electromagnetic radiation)" Is it right that you must take off your metal eyeglasses when calling by mobile? Q. they say that because mobile have an electromagnetic fields. The causes of this - in their view - that the glasses are surrounded by an external framework of metal which combine with mobile antenna and its radiation and concentrate magnetic fields which in turn has a direct impact on the retina, increasing the rate of absorption of electromagnetic waves, which adversely affect eyesight. I want to know if that story is right or not. Thanks a lot and sorry for my poor english. Asked by Abu Al-Baraa - Thu Jun 11 15:58:35 2009 - - 1 Answers - 0 Comments A. no. i think its safe to wear the glasses while on the cell phone. no need to remove them Answered by princeidoc - Thu Jun 11 20:32:01 2009 Science helppppppppppp !? Q. Which of the following waves, from the electromagnetic spectrum, have the lowest energy? gamma waves x-ray waves microwaves violet light waves --- Question 4 (Multiple Choice Worth 3 points) Low energy waves have a short wavelength a long wavelength neither a short nor a long wavelength no waves --- Question 5 (Multiple Choice Worth 3 points) You can see things in a mirror because the light is being refracted by the mirror absorbed by the mirror radiated by the mirror reflected by the mirror --- Question 6 (Multiple Choice Worth 3 points) The amplitude of the sound wave determines the color of the wave loudness of the sound speed of the sound wave frequency of the… [cont.] Asked by Pattycakezss . - Mon Jul 27 14:48:08 2009 - - 4 Answers - 0 Comments A. 1. Microwaves 2.neither 3.reflected 4.loudnessthey both have wave length 5.both gasoline and food 6.wavelength 7.conduction 8. conduction 9. radiation Answered by Austin C - Mon Jul 27 14:54:25 2009 Hey. I need help with my physical science. please help. thanks i really do apprciate it!!?
Q. HELP!! 1. What is the most penetrating type of radiation? a. gamma ray b. nuclei c. beta particle d. alpha particle 2. What is a helium nucleus with twi protons and two neutrons called? a. gamma ray b. alpha particle c. beta particle d. fusion particle 3. What age of fossils is cabon 14 dating useful for? a. more than 100,000 b. one billion c. less than 50,000 d. one billion years 4. Henry Becqurel discovered radioactivity using which device? a. chain reaction b photographic plate c. geiger counter d. bubble chamber 5. what is caused in a fission reactor when neutrons strike other nuclei? a. fussion reactions b. chain rections c. radioactie decay d. electron avalanche 6. what is the name of the force that causes protons and neutrons… [cont.] Asked by Kk - Sat Mar 20 15:08:09 2010 - - 1 Answers - 0 Comments From Yahoo Answer Search: "Absorption (electromagnetic radiation)" |
